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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク phaeozem ： ウィキペディア英語版 phaeozem A phaeozem in the FAO World Reference Base for Soil Resources is a dark soil with a high base status, but without a calcareous soil horizon within one metre of the soil surface. Phaeozems correlate with the udolls and aquolls (mollisols) of the USDA soil taxonomy.〔(Major Soils of the World. ISRIC Wageningen, The Netherlands, 2001 )〕 These soils are found mainly in humid and sub-humid tall-grass steppes; there are extensive areas of them in the USA, Argentina and China. Phaeozems form from unconsolidated sediments such as loess and glacial till and typically have organic matter contents of about 5% and a pH of 5 - 7. Intensive agricultural use is widespread and includes wheat, soybean and cotton production and improved pastures for cattle. == See also == *Pedogenesis *Pedology (soil study) *Soil classification 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「phaeozem」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.